Each numbered rule (1, 2, 3...) was rendered as separate <ol> elements
all starting from 1. Added start attribute to preserve original numbering
and allowed it through DOMPurify sanitization.
- Fix formatContent to handle mixed content (inline HTML + newlines)
- Only skip paragraph conversion for content with block-level HTML
- Add sanitizer support for <s>, <del>, <ins>, <tg-spoiler>
- Add prose styles for underline, strikethrough, and spoiler tags
- Light theme variants included